cramping at 4 weeks.

Alma • Married my Prince Charming 09/30/17

so according to the app im 4 weeks 4 days. its our first and were super excited about our little poppy seed. But today ive had cramping for the majority of the day. its not bad but they feel like when my period starts. ive taken 6 pregnacy test and theyre all positive. is the cramping normal?